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TO vALL WHO IT MAY CONCERN:

Be it -known that I, F. S. PE \SE, of Buffalo, in the county of Erie,and the State of New York, have invented anew and useful Improved BlastApparatus for Carburetters; and I do hereby declare the following to bea full, clear, and exact description of the same, suicient'to enable oneskilled in the art to which it appertains to construct and use the same,reference being had to the accompanying drawing, making part of thisspeciiCation, and in which drawings- Figure l is a perspective view; and

Figures il and are detached views.

The object of the improvement is a cheap and effective apparatus orproducing a continuous blast for carburett-ers, and the means employedconsists of a series of bellows below an upper one which collects theair from the others, the lower bellows being operated by cams on a.revolving shaft by a weight or spring. The cams are preferred for thispurpose, as they are readily attacherl to a straight shaft and disposedthereon in such circular relation as to act consecutivclylupon the lowerbellows, so that the blast of air is constantly passing in to the upperreservoir whose weight gives it an equable discharging force.

I have aimed at in this arrangement to secure economy and simplicitywith effectiveness, and prefer the cams in the former respect forthereason of the chcapucss of fitting, and from the fact that thelower'board of the bellows is allowed to drop freely as soon as the campasses it to the extent allowed it by the cords which attach thelowerboards of the respective bellows to the bed board of the upper one. Bythis means the blast capacity is-regulated, as thefshortening ofthestring will cause thebellows to hold less, and a revolution of the shaftwill dischargea smaller volume of air. The-bellows are stronglyconstructed, with wooden plates attached t-o each other and to the upperand lower boards by elastic strips, so that avblast of considerablepower may be attained without bagging outwardly the membrane whichconnects the upper and lower portions of the bellows.

' tially as described and represented.

The valves in the' upper andlower reservoir bellows open upward, and theblast is educted through the'pipe a and carried to the carburctter. Aweight attached to the strap b, which is wound on a pulley ou thecam-shaft, constitutes the motive power of the machine. A spring may besubstituted therefor, if preferred.

It' preferred, each cam may have threeor four prongs, so as to actupon-the bellows a corresponding number of times at every revolution oi'the shaft. (See g. 3.) v

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

The'arrangement of. the shaft A, cams B B, dividing the circle andoperating the bellows of corresponding number, which are adjusted as tocapacity by the check-strings c, the whole constructed and operatedsubstan- 'Io the above specification of my improvement I have signed myhand this 19th day of March, 1867.

F. S. PEASE.

Witnesses:

O. KNIGHT, Gro. A. MORRISON.

